Variable-speed gearing.



J. s. BARNES. VARIABLE SPEED GBARING. 7 APPLICATION FILED 001230, 1911.

1,024,81 8. Patented Apr. 30, 912...

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UNITED STATES PATENT OFFICE.

JOHN S. BARNES, OF ROCKFORD, ILLINOIS, ASSIGNOR TO W. F. 86 JOHN BARNESCOMPANY, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

VARIABLE-SPEED GEARING.

Specification of Letters Patent.

Application filed October 30, 1911.

To all whom it may concern:

Be it known that I, JOHN S. BARNEs, a citizen of the United States,residing at Rockford, in the county of Winnebago and State of Illinois,have invented certain new and useful Improvements in Variable-SpeedGearing, of which the following is a specification.

The object of this invention is to construct a very simple gearing inwhich the greatest number of speeds can be obtained with the givennumber of gears.

In the accompanying drawings, Fig. 1 is a section on line aa Fig. 3.Fig. 2 is an elevation in which the casing is broken away. Fig. 3 is asection on line b b Fig. 2. Fig. 4 is a section on line 0 c Fig. 2. Fig.5 is a perspective view of one of the shipping yokes.

The casing 1 supports bearings for the driving shaft 2, driven shaft 3and intermediate shaft 4. The driving shaft 2 is rotated by a beltconnection with the pulley 5 connecting it with a prime mover. Theintermediate shaft 4 has three spur-gears 6, 7 and 8 pinned thereto, andthe gear 6 has a flange 9. The driving shaft 2 has a spur-gear 10slidably engaging it, and has its faces formed with the clutch members11 and 12. A spur-gear 13 is loosely mounted on the driving-shaft 2 andis provided with a clutch face 14 and is held against sliding on theshaft 2 by the flange 9 of the spur-gear 6 engaging it. This spur-gear13 meshes with the spur-gear 6. A spur-gear 15 is loosely mounted on thedriving-shaft 2, and is provided with a clutch face 16, also with aflange 17. This spur-gear is held against a sliding movement on thedriving-shaft by the flange 17 engaging the spur-gear 8. The spur-gear15 meshes with the spur-gear 8.

A rod 18 is supported in the casing and to it is connected ashipping-yoke 19 which engages both faces of the sliding-gear 10, andhas a projection 20 which contacts with the casing 1. By means of thisrod and yoke, the gear 10 can be held in mesh with the gear 7 can bedisengaged therefrom and its clutch face 11 moved into engagement withthe clutch face 14 of the gear 13, or its clutch face 12 moved intoengagement with the clutch face 16 of the gear 15.

To the driven shaft 3 is slidably connected a spur-gear 21 having clutchfaces 22 and 23. A spur-gear 24 is loosely mounted on the driven-shaftand has a clutch face 25. This gear is held from a sliding movement onthe shaft 3 by the flange 9 of the gear 6 engaging it. A spur-gear 26 isloosely mounted on the driven-shaft and has a clutch face 27. A collar28 is pinned to the driven shaft and holds the gear 26 from sliding onthe shaft. The gear 21 can be disengaged from the gear 7 and its clutchface 22 moved into engagement with the clutch face 25 of the gear 24, orits clutch face 23 moved into engagement with the clutch face 27 of thegear 26.

A rod 29 is supported by the casing and to it is connected ashipping-yoke 30, which engages both faces of the sliding gear 21 andhas a projection 31 which contacts with the casing. By means of this rodand yoke, the gear 21 can be moved as above set forth.

By the employment of the two sliding gears 10 and 21, and the variousclutch connections nine speeds can be given to the driven-shaft from thedriving-shaft.

I claim as my invention.

A variable speed gearing comprising a driving-shaft, a driven-shaft, anintermediate-shaft, three spur-gears fixedly connected to theintermediate-shaft, a spur-gear slidably mounted on the driving-shaftand pro vided with clutch members on both faces, two-spur-gears looselymounted on the driving-shaft, and each provided with a clutch face,means for moving the clutch members of the slidable gear on thedriving-shaft into engagement with either of the clutch faces of thegears loosely mounted thereon, a spurgear slidably mounted onthedriven-shaft and provided with clutch members on both faces, twospur-gears loosely mounted on the driven shaft and each provided with aclutch face, and means for moving the clutch members of theslidable-gear on the drivenshaft into engagement with either of theclutch faces of the gears loosely mounted thereon.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN S. BARNES. Witnesses:

ELIZA J BRYDEN, A. O. BEHEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

